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Finding the Fourth Proportional to 107,944.40, 161,657.40 and 87,208.40

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Solution

The fourth proportional to 107,944.40, 161,657.40 and 87,208.40 is: 130,603.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,944.40 : 161,657.40 = 87,208.40 : x
  2. Step 2: Convert to fraction form
    107,944.40/161,657.40 = 87,208.40/x
  3. Step 3: Cross multiply
    107,944.40x = 161,657.40 × 87,208.40
  4. Step 4: Simplify right side
    107,944.40x = 14,097,883,202.16
  5. Step 5: Solve for x
    x = 14,097,883,202.16/107,944.40
  6. Step 6: Final answer
    x = 130,603.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.